<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style type="text/css">
.wrapper{
    max-width:400px;
}
.wrapper video{
    max-width:100%;
    display:blcok;
}


</style>
</head>
<body> 
       <div class="wrapper"><video src="https://suyongmv.oss-cn-beijing.aliyuncs.com/%E6%88%98%E7%8B%BC.mp4"  controls="controls" ></video></div>
</body>
</html>